Option 1 -> Correctly defines marketed surplus as the part of farm production that farmers bring to market after meeting their own needs.
Option 2 -> Refers to the total value of agricultural market sales, which is a broader economic metric rather than the specific concept of marketed surplus.
Option 3 -> Describes agricultural exports only, which is just one component of marketed surplus, not the complete definition.
Option 4 -> Describes agricultural subsidies or government support schemes, which is unrelated to marketed surplus.
Hence, Option 1 -> Marketed surplus is the quantity of agricultural produce that farmers sell in the market after retaining what they need for household consumption, seeds for next season, animal feed, and other farm requirements. This is a key concept in agricultural economics as it indicates the commercialization level of farming -> correct